Cierra, Inc.

Cierra, Inc. Patent applications

Patent application number

Title

Published

20080300590

APPARATUS AND METHODS FOR MULTIPOLAR TISSUE WELDING - Apparatus, systems and methods of welding and coagulating tissue utilize a combination of monopolar and bipolar delivery of RF energy. This method is referred to as multipolar RF delivery and includes bringing a treatment apparatus having first and second electrodes to a treatment site. A first potential is applied to the first electrode and a second potential lower than the first is delivered to the second electrode. This results in current flow from the first electrode through the tissue to the second electrode and then through the tissue to a ground electrode. Current also flows from the first electrode through the tissue to the ground electrode and current may also flow from the first electrode through the tissue to the second electrode and return directly to the ground electrode.